Treatment of montan wax



UNITED ST-A Patented Dec. 1, 1931 res f Pane. OFFICE RHINE, GERMANY, ASSIGNORS TO I. G.

l Owin to its high "content of free organic hydrides and the like.

. A Montan wax possessing particularly ci'ds, V ontan wax which has been bleached i31 treatment with oxidizing agents, such as c lorine, cliromic acid, air in the presence of nitricacid and the like, has a tendency to crystallize when used forexample in boot polishes, floor polishes and other similar articles.

We have now found that this difliculty is overcome if the carb'oxylgroups (COOH) of the free organic acids present in 'the bleached, Montan wax are completely or partially converted into salts, or into other groups containing the CO- group and which do not contain a carboxyl hydrogen atom: For example, the acids may, be converted. into their alkali metal or alkaline earth metal salts-('which are equivalents for the purposes of the present invention) or a mixture of both, or they may be completely or partially esterified with alcohols, suchas ethyl alcohol, ethylene-7m butylene-glycol, glycerol, butanol and the like, or completely or partially converted into amides or their substitution products, or into'ketones, an-

I 1 favourable pro erties results from the mix- 36 I c for exam le by treatment'with alcohols, or

ture obtained y converting a ortion 'of" the free-organic acids in the wax into esters,

alcohol m xtures, and the remaining portion "either wholl or in part into salts, or mixtures thereo for example by the iaction of an alkali or an alakline earth ydroxid. The operation is conducted, either by first partially esterifying the product with an alcohol, such as glycerol, and then converting the major portion of the residual organic acids into salts by the addition of a littlealkaline earth metal hydroxid, or a i mixture of alkaliand an alkaline earth metal hydroxid, or by reversing theorder of procedure.- V I I v l 'It is often advisable to esterify the acids with different alcohols, such asia mixture of glycol and butanol, and also to prepare mixed metallic'salts.

- For special purposes two 'or more of such ICOIHROSIUQIIS may .be incorporated together I t r a I a FARBE'NINDUSTBIE AKTIENGRELLBOEAI'I,

or ranxxroanox-rrrn-mam, ennmazma conroaanox or enamm or uon'rax wax Jo Drawing. Application iileci January 17, 1928, Serial R0. 947,454, and in Germany J'anuary 81, 1987.

by fusion. A- wax with excellent polishing properties is obtained, for example, by mixmg a calcium-zinc-glycerol ester wax with a calcium-amyl-ester wax. e

When empldyed for exam le in boot polishes and the like, the wax o tained'according to the present invention has a very good capacity for fixing oil of turpentine and other solvents and diluents, such as are-used in their manufacture, and can be stained with theta usual dyestuffs without these dyestufi's having any tendency to separate. therefrom; Further a very'rich loss is easily obtained with black oil boot p0 ishes, which have been prepared from the said waxes.

The mixtures forming the resulting new waxeshave no tendency to crystallize and 'they furtherhavethe advantage of being readily emulsified. t I r The following examples will further illustrate the nature of the said invention which however is not limited thereto. The parts are b weight. E'mwmple 1 parts of Montan wax,'bleached with chromic acid, are treated at from to C. with a solution of 2 parts of sodium carbonate or caustic potash in 5 parts of water, until all the water has evaporated. The max obtained shows no tendency to crystallize "an'd 'formshomogeneous preparations when 7 used, for example, in shoe creams, floor polishes and other articles. EwampZeQ 100 parts of Montan wax bleached with chromic acid are heated in an autoclave to about 200 (1, with 25 parts of glycerol, until the latter has been, at least partially esterified. The product obtainedmay be employed for the same purposes as that obtained according to Example 1, and also shows no tendency to" crystallize. J

' Ewamplefl Montan wax is heated'for five hours to a temperature of 200 C. 'in.an autoclave with gaseous ammonia, the organic acids contained amides.

calcium hydroxid are then stirred into the melt, and stirring is continued, a temperature of from 130 to 140 C. beinggnaintained, un-

til the initially cloudy melt has again clari-v fied. The-product thus obtained furnishes bpot polishes which give an extremely rich oss. What we claim is: 1. The process for the production of an improved bleached 'Montan wax, which comprises converting at least part of the carboxyl groups of the free organic acids present in the bleached Montan wax into groups containing the C() group but which do not contain a carboxyl hydrogen atom.

2. The process for the production of an improved bleached Montan wax, which comprises converting at least part of the free organic acids present in the bleached Mrhltan wax into salts. r

'has' been converted into a group containing the -CO- group and which does not contain 8 carboxyl hydrogen atom.

10. As a new article of manufacture bleached Montan wax in which at least part of the-carboxyl groups ofthe organic acids has been converted into salts.

-11'. As a new article of manufacture bleached Montan wax in which at least part of the carboxyl groups of the organic acids has been converted into esters.

12. As a new article of manufacture bleachedxMontan wax in which at least part of the carboxyl groupsof the organic acids has been converted partly into salts and partly into esters. L

13. As a new article of manufacture bleached Montan'wax in which at least part of the carboxyl groups of the organic acids has been converted partly into-a calcium salt and partly into a glycol ester.

In testimony whereof we have hereunto set our hands.

FRIEDRICH WILHELM GUTHKE. .WILHELM PUNGS.

3. The process for the production of an 1 improved'bleached Montan wax, which comprises converting at least part of the free organic acids present in the bleached Montan wax into salts bythe action of alkali.-

' 4. The process for the production of an improved bleachedMontan wax, which comprlses converting at least part of the free organic acids present in'the bleached Montan wax into a mixture of salts by the action of 5. The process for'the production of an improved bleached Montan wax, which com- I prises converting at least partof the free or- 'ganic acids present in the bleached Montan wax into esters by the action of an alcohol.

6. Theprocess for the production of an.

'an alkali and an alkaline earth metalhydroxid. 4

improved. bleached Montan wax, which comprlse's converting atleast part ofthe free organic acids present ,in the-bleached Montan wax into a mixture of esters by the action of several alcohols.

7. The

process for the production of an mproved leached Montan wax, which com prises converting part of the free organic acids present in the bleached Montan wax into salts and another part into esters. 8. The processfor the productionof an 1m roved bleached Montan wax; which comprises cohverting part of the free organic acids present in the, bleached Montan w'ax treating the said, bleached Montan wax first with lycol and then with calcium hydroxid. 9. s a new article of manufactureinto salts and another part into-esters by bleached Montan wax in which at" least part I of the carboxyl groups of the organic acids 

